Hint: A radius is half a diameter...
Yes. The radius is half the diameter.
diameter = 7.32 Formula: Circumference = 2 * pi * radius 23 = 2 * (3.1416) * radius 23 = 6.2832 * radius 23/6.2832 = 6.2832/6.2632 * radius 3.66 = radius diameter = 2 * radius diameter = 2 * 3.66 diameter = 7.32
11.5 inches for a 23-inch diameter circle. If you meant the circumference is 23 inches, then the radius would be 3.6606 inches.
11.5 (r = d/2)
Circumference of a circle: 2*pi*radius or diameter*pi
The answer depends on whether the 23 inch refers to its radius or diameter.
About 7 cm.
A circle with a radius of 11.5 miles has an area of 415.48 square miles.
A circle with a radius of 23 units has an area of 1,661.9 square units.
The circumference of a circle that has a diameter of 23' 11" is 901.64 inches.
Area of circle = pi x r x r where r is the radius. You do not specify if 23 inch is the diameter or radius of the circle. Anyway pi = 3.1415 so plug in the value of the radius in the formula above and you will get the area in square inches. Then divide that by 144 to get area in square feet.